Table 17.4. Herbicides approved for managing weeds in sweetcorn. (continued)
Labels change frequently. Be sure to read a current product label before applying any chemical.
Active ingredient Trade name MOA
lb. a.i./A product/A code Weeds controlled / remarks
*** PREEMERGENCE ***
Atrazine (AAtrex) 4 L 5 Germinating broadleaf and grass weeds. Apply to moist soil. Do not exceed 2.5 lb. a.i./A per calendar
Mineral Mineral 2 - 4 pt. year. Consult labels for plant back restrictions on rotational crops.
1.0 - 2.0 Muck 4 - 6 pt.
Muck (AAtrex Nine-0) 90 WDG
2.0 - 3.0 Mineral 1.1 - 2.2 lb.
Muck 2.2 - 3.3 lb.
Carfentrazone (Aim) 1.9 EW 14 Apply as a preplant burn down for emerged broadleaf weeds. Use crop oil concentrate, methylated
seed oil, or nonionic surfactant at recommended rates. Maximum rate of 0.096 lb. a.i./A per season.
No pretransplant interval.
up to 0.031
(Aim) 2 EC
Dimethenamid-P (Outlook, Slider) 6 EC 15 Annual broadleaf and grass weeds. After application incorporate into soil by rainfall, sprinkler irrigation,
0.56 - 0.84 or mechanical tillage. Consult label for rate based on soil texture.
EPTC (Eradicane) 6.7 E 8 Annual broadleaf, grass weeds and nutsedge. Use lower rates on lighter soils (sand). Control of
4.0 - 6.0 4.75 - 7.33 pt. perennial weeds such as bermudagrass or nutsedge is increased through incorporation.
Flufenacet 15 Annual broadleaf and grass weeds. Rainfall, irrigation, or light cultivation is required within 7 to 10 days
0.49 - 0.68 13 - 18 oz. of application. Consult label for rate based on soil texture.
Glyphosate (various formulations) 9 Emerged broadleaf and grass weeds. Apply as a preplant burndown. Tank mix with a residual herbicide
consult labels to broaden spectrum of weed control. Consult label for individual product directions.
Mesotrione (Callisto) 4 SC 28 Annual broadleaf weeds. Tank mix with a preemergence grass herbicide for grass control. Do not
0.188 - 0.24
Paraquat (Gramoxone) 2 SL 22 Emerged broadleaf and grass weeds. Apply as a preplant burndown. No more than 3 applications per
0.5 - 1.0 2.0 - 4.0 pt. year. Tank mix with a residual preemergence herbicide to broaden the spectrum of weed control.
(Firestorm) 3 SL
1.3 - 2.7 pt.
Pendimethalin (Acumen, Prowl) 3.3 EC 3 Broadleaf and grass weeds. Overhead irrigation or rainfall is required within 7 days of application.
Mineral Mineral 1.8 - 2.4 pt.
0.75 - 1.0 Muck 2.4 - 4.8 pt.
Muck (Prowl H20) 3.8
1.0 - 2.0 Mineral 2.0 - 3.0 pt.
Muck 2.0 - 4.0 pt.
Pelargonic acid (Scythe) 4.2 EC 27 Emerged broadleaf and grass weeds. Apply as a preplant burndown treatment. Product is a contact,
nonselective, foliar applied herbicide with no residual control. May be tank mixed with soil residual
compounds.
3 - 10% v/v
(ET Herbicide) 0.208 EC 14 Emerged broadleaf weeds. Apply as a preplant burndown treatment.
0.001 - 0.003
S-metolachlor (Brawl, Dual Magnum) 7.62 EC 15 Annual broadleaf and grass weeds. Use a lower rate on lighter soils. Weed control is increased with 0.5
1.0 - 1.6 to 1 in. of rainfall or irrigation. Do not exceed 3.9 pt./A per crop year depending on soil texture.
1.0 - 1.67 pt.
(Cinch, Dual II Magnum) 7.64 EC
1.0 - 1.67 pt.
Simazine (Princep, Simazine) 4 L 5 Broadleaf and grass weeds. If a second application is required do no exceed 2.5 lb. a.i./A per calendar
2.0 2.0 qt. year. Simazine 4 L and Simazine 90 DF can be applied to muck soils at 2.5 lb. a.i./A. PHI 45 days.
(Princep, Simazine) 90 WDG
2.2 lb.
334 2019 Vegetable Production Handbook of Florida